After much debate, I decided to let go of my 2006 330i for a 2005 545i. So far, the car does not disappoint. The iDrive is by far one of the best gadgets the car has to offer. You have to be computer illiterate not to know how to use the iDrive. These are the gadgets that make the car exciting!! As far as performance, the engine delivers!!! I could only image how the 550i performs. In addition, the car is very spacious and the seats are very comfortable. I can't wait to drive the car because it is that exciting!!
iDrive!! (do not listen to any car editors - try it first, then make a decision) Nav system (could be much better), bluetooth, PDC, Sport package, space, and engine.
Provide more functionality in the iDrive, hard drive based Nav instead of DVD, free Nav dvd updates, Nav screen should have the ability to display across the whole screen instead of ¾, ability to retro fit HD radio and iPod aux, BMW assist should be standard for the life of the warranty or vehicle.